Home / 156,723.60-235,186.20-86,653.20

Finding the Fourth Proportional to 156,723.60, 235,186.20 and 86,653.20

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Solution

The fourth proportional to 156,723.60, 235,186.20 and 86,653.20 is: 130,035.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,723.60 : 235,186.20 = 86,653.20 : x
  2. Step 2: Convert to fraction form
    156,723.60/235,186.20 = 86,653.20/x
  3. Step 3: Cross multiply
    156,723.60x = 235,186.20 × 86,653.20
  4. Step 4: Simplify right side
    156,723.60x = 20,379,636,825.84
  5. Step 5: Solve for x
    x = 20,379,636,825.84/156,723.60
  6. Step 6: Final answer
    x = 130,035.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.